Turbinicarpus schmiedickeanus subs. flaviflorus(G.Frank & A.B.Lau) Glass: It has a very distinctive form, described by some as almost pagoda-like with conical tubercles, 4(-6) spines and greenish yellow flowers. Distribution: Santa Rita, San Luis Potosi.

Turbinicarpus sp. Negrita: pretty much the same as Turbinicarpus schmiedickeanus subs. klinkerianus and not readily distinguishable, if not for the provenance. Distribution: La Negrita, San Luis Potosi, Mexico.

Cultivation and Propagation: It’s a fairly easy species to cultivate. It needs a very well drained soil, and requires strong sun to part sun to develop good spinal growth. Waterings should be rather infrequent, to keep the plant compact and avoid it becoming excessively elongated and unnatural in appearance. Keep dry in winter or when night temperatures remain below 10° C; it is hardy to -4°C for a short period. Assure a good ventilation.